CN1301092A - Emission power controlling system for mobile communication system - Google Patents
Emission power controlling system for mobile communication system Download PDFInfo
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- CN1301092A CN1301092A CN00135794A CN00135794A CN1301092A CN 1301092 A CN1301092 A CN 1301092A CN 00135794 A CN00135794 A CN 00135794A CN 00135794 A CN00135794 A CN 00135794A CN 1301092 A CN1301092 A CN 1301092A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
- H04W52/362—Aspects of the step size
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
- H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/54—Signalisation aspects of the TPC commands, e.g. frame structure
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Abstract
In a CDMA type mobile communication system, when both a radio channel in an up-link direction and a radio channel in a down-link direction are interrupted, a base station successively increases down-link transmission power by 1 dB in a constant-interval until a response is sent from a mobile station, while releasing the normal down-link transmission power control operation. Also, the base station controls a power control bit produced by the base station so as to successively increase up-link transmission power of the mobile station.
Description
The through-put power control system of using in the mobile communication system that the present invention relates to operate by code division multiple access system (cdma system).Be particularly related to the through-put power control system that to avoid so-called " call interruption " phenomenon.
In recent years, electronic communication is progressive widely, popularizes fast as the mobile communication system of carphone and portable phone.Because the progress of electronic communication, mobile communication system shifts to code division multiple access (CDMA) system from time division multiple access (TDMA) system just gradually.
In general, the portable mobile communication system of CDMA type has following advantage.
(1) this cellular mobile telecommunication system has advantages of higher stability with respect to interference, example
As, radio interference and radio storm.
(2) because power spectrum density is lower, so less to the interference of other communication channel.
(3), can set up super maintaining secrecy because power spectrum density is lower.
(4) super maintaining secrecy can be set up by extended code.
(5) can use different extended codes to finish multiple access.
(6) can under overload situations, carry out mobile communication.
But when the cell mobile communication systems of CDMA type has above-mentioned various advantage, this cell mobile communication systems will have the variety of issue of oneself.In these problems, there is the problem of an interference.As a typical interference problem, so-called " near to far away " problem has taken place.This " closely to far away " problem means a kind of like this phenomenon, when setting up communication in the base station with between away from desired base station, this base station, near another interference mobile radio station that is positioned at this base station may carry out big interference to the desired mobile radio station of communicating by letter.This " closely to far away " problem does not occur over just in the CDMA mobile communication system, also occurs in other conventional mobile communication system.That is, this " closely to far away " problem is known as channel to channel disturbance (same channel interference/adjacent channel interference).Especially, because a large amount of mobile radio stations uses identical frequency jointly in CDMA, this interference problem becomes a serious problem.
For solving this interference problem, various through-put power control units are provided, in the mobile communication system of CDMA type, to reduce interference volume.As these through-put power control units, there is two types through-put power control unit, promptly, work in reverse link (uplink direction) the through-put power control unit of mobile radio station, work in forward link (down link direction) the through-put power control unit of base station to mobile radio station to the base station.
Received electric field strength is measured and is finished by the receiving element of base station in the uplink transmission power control unit, and base station measurement is from the electric field strength of mobile radio station emitted radio signal.According to the result of this electric field intensity measuremenrt, when the electric field strength of accepting was higher than predetermined threshold value, the base station used power control bits order mobile radio station to reduce transmitting power.On the other hand, when the electric field strength of accepting was lower than predetermined threshold value, the base station used power control bits order mobile radio station to increase transmitting power.
On the other hand, the electric field intensity measuremenrt of reception is to be finished by the receiving element of the mobile radio station in the down link direction through-put power control unit.Moving station measuring is from the received electric field strength of the information signal of base station.Mobile radio station produces transmission power control information according to the received electric field strength of measuring, and then, sends the transmission power control information that produces and arrives the base station.The base station is from this transmission power control information computes transmit power, and the adjustment through-put power.
In such through-put power control system, for example, the IS-95 standard of TIA/EIA (telecommunications industry association/electronic industries association).Down link direction transmission control operation is independent of uplink direction transmission control operation.
But conventional through-put power control system has following problem.
With reference to figure 1, the problem of the conventional through-put power control system of explained later.Fig. 1 represents a kind of like this state, moves to the shaded portions of building 700 with the mobile radio station 300 of base station 200 proper communications.The cut position of radio communicating channel that building 700 is just in time set up between base station 200 and mobile radio station 300.The shaded portions correspondence that should be noted that building 700 is from inert zone territory that another base station radio wave of neighbor base station 200 can not arrive.That is, base station 200 can not disconnect communication.
Under such state, the substandard mobile radio station 300 of IS-95 that is operated in TIA/EIA stops transmission output, so that can not receive the useful signal of downlink radio channel in certain time cycle.Simultaneously, base station 200 can not receive from the uplink link radio signal of mobile radio station 300 emissions.This uplink link radio signal comprises the quality situation information of the radio channel that necessarily requires, so that carry out the through-put power control operation of downlink radio channel.As a result, this conventional through-put power control system is with regard to the problem of possibility bid interruption.
Even provide a kind of under the uplink direction and the interrupted state of down link direction of radio channel during purpose of the present invention, can recover the communications power control system set up between base station and the mobile radio station, this interruption is caused by the following fact, reason owing to building, under normal circumstances, the mobile radio station with base station communication moves to the place that frequent generation radio wave interrupts.
According to the present invention, the through-put power control system that mobile communication system is used is applicable to the mobile communication system by the CDMA type of mobile radio station, a plurality of base station, base-station control apparatus configuration.
According to an aspect of of the present present invention, CDMA type mobile communication system comprises:
When the base station the report request of accepting state send to mobile radio station with the report mobile radio station accepting state the time, radio channel is interrupted by following reason, be moved to the place that the recurrent radio wave that is caused by building interrupts with the mobile radio station of base station communication in normal condition, be used in fixed intervals, increasing the device of the downlink transmitted power of base station, up to send a response from mobile radio station; When the power controlling control bit makes up with the report request, be used in fixed intervals, increasing the device of the uplink transmission power of mobile radio station.
Each added value that should be appreciated that the uplink transmission power of the downlink transmitted power of base station in fixed intervals and mobile radio station is 1db.Equally, because the base station comprises the traffic measurement part, so added value separately can be arranged on 0.5db in the scope between the 2db, to respond the telephone traffic that traffic measurement is partly measured.
Equally, added value separately can be arranged on 0.5db in the scope between the 2db, with the utilization rate of radio-frequency apparatus of response base station.
In addition, when the utilization rate of the radio-frequency apparatus of base station was less than or equal to 25%, added value can be set to 2db; When the utilization rate of the radio-frequency apparatus of base station more than or equal to 75% the time, added value can be set to 0.5db; When the utilization rate of the radio-frequency apparatus of base station surpasses 25% less than 75% the time, added value can be set to 1db.
Fig. 1 is the schematic diagram of interpretation routine through-put power control system problem;
The configuration block diagram of Fig. 2 display application mobile communication system of the present invention;
Fig. 3 is the block diagram of the configuration of the base-station control apparatus that provides in the mobile communication system according to first embodiment of the invention, base station, mobile radio station;
Fig. 4 is the structural representation of the up link frame signal of mobile communication system use of the present invention;
Fig. 5 is the structural representation of the down link frame signal of mobile communication system use of the present invention;
Fig. 6 is the structural representation of the uplink voice control frame signal of mobile communication system use of the present invention;
Fig. 7 is a flow chart of explaining the mobile communication system operation of first embodiment of the invention;
Fig. 8 has explained the flow chart of executable operations on the mobile radio station end, in this state, because unusual communications status has taken place in the masking phenomenon that Fig. 1 explains;
Fig. 9 has described the base-station control apparatus that uses and the operational flowchart of base station in mobile communication system, this state is for because the situation of unusual communications status has taken place the masking phenomenon that Fig. 1 explains;
Figure 10 is the block diagram of the configuration of the base-station control apparatus that adopts in the mobile communication system according to second embodiment of the invention, base station, mobile radio station;
Figure 11 is the flow chart of second embodiment of the invention mobile communication system operation;
Figure 12 be the radio-frequency apparatus utilization rate is described and the through-put power control hierarchy value that in Fig. 1 flow chart, is provided with between the example of the flow chart that concerns.
Description is described the through-put power control system of first embodiment of the invention in detail.
Fig. 2 is the mobile communication system block diagram that first embodiment of the invention is used.In Fig. 2, the wire transmission line that base-station control apparatus 100 uses industrial siding to constitute is connected to base station 200-1, base station 200-2, base station 200-n (n is a positive integer).Each base station 200-1,200-2,200-n use radio channel to be connected to mobile radio station 300.There are two kinds of channels, that is, arrive the uplink radio channels of relevant base station and the downlink radio channel that mobile radio station 300 is arrived in the auto-correlation base station from mobile radio station 300.
Fig. 3 is the internal configurations block diagram of above-mentioned base-station control apparatus 100, base station 200-1, base station 200-2 and mobile radio station 300 shown in Figure 2.In Fig. 3, the device of the uplink direction of base station 200-1 comprises receiving element 210-1 and decoding unit 230-1.Receiving element 210-1 receives the uplink link radio signal 20 from mobile radio station 300 emissions (broadcasting), and the uplink link radio signal that receives is carried out demodulation.Decoding unit 230-1 decodes to the uplink link radio signal of receiving element 210-1 demodulation.To obtain the uplink voice frame signal.Eb/No supplies to power control bits generation unit 260-1 by demodulating unit 230-1 demodulated received signal, and the uplink voice frame signal of decoding supplies to base-station control apparatus 100.In this state, " Eb/No " expression is with respect to the noisiness of the per unit energy/1Hz of single position.
The device of the down link direction of base station 200-1 comprises coding unit 240-1, transmission unit 220-1, through-put power control unit 250-1, power control bits generation unit 260-1.Coding unit 240-1 encodes to the downlink voice frames signal of base-station control apparatus 100 emissions.Transmission unit 220-1 modulates coding unit 240-1 encoded signals, and sends the signal of modulation.According to the reference Ec/Io of electric field strength information and base-station control apparatus 100 transmissions, the through-put power of through-put power control unit 250-1 calculation requirement.So that change through-put power by rights.In this state, Ec/Io represents the ratio of signal and disturbing wave signal.Power is controlled to be generation unit 260-1 the received signal that decoding unit 230-1 sends is compared with reference to Ec/Io with inner the generation, to produce suitable power control bits.The internal configurations that should be noted that base station 200-2 is identical with the internal configurations of base station 200-1.
Base-station control apparatus 100 comprises speech frame signal selected cell 110, speech coding unit 120, controlled processing unit 130.The speech frame signal selected cell 110 speech frame signal that selection has highest signal quality from the uplink voice frame signal that the base station sends then, compares speech frame quality of signals and the reference value selected.Speech coding unit 120 is converted into the uplink voice signal to the speech data that obtains in the uplink voice frame signal, and the speech data that obtains at the downlink voice frames signal is converted into the downlink voice signal.According to the through-put power report information, controlled processing unit 130 produces reference value Ec/Io.By the base station, send this through-put power report information from the mobile radio station of receiving downlink radio signal.
The device bag receiving element 310 of the down link direction of mobile radio station 300, decoding unit 330, speech frame signal synthesis unit 360, speech coding unit 370.Receiving element 310 receives the downlink radio signal 21 of launching from base station 200-1, and the downlink radio signal 21 that receives is carried out demodulation.The downlink radio signal 21 of 330 pairs of receiving element 310 demodulation of decoding unit is decoded, to obtain the downlink voice frames signal.According to the good/bad speech data signal that obtains in the downlink voice frames signal, speech frame signal synthesis unit 360 is carried out signal weighting/synthetic operation.Speech coding unit 370 is converted into the downlink voice signal to the speech data that is included in the downlink voice frames signal.
The device of the uplink direction of mobile radio station 300 comprises speech coding unit 370, coding unit 340, transmission unit 320, through-put power control unit 350.Speech coding unit 370 is converted into the uplink voice signal to the speech data that obtains in the uplink voice frame signal.340 pairs of uplink voice frame signals of coding unit are encoded.Transmission unit 320 modulation are by the uplink voice frame signal of coding unit 340 codings, to send the uplink voice frame signal of coding.According to power control bits, through-put power control unit 350 changes through-put power by rights.
Fig. 4 has shown the structure of the up link frame signal that the first embodiment of the invention mobile communication system is used.Fig. 5 has shown the structure of down link frame signal.Fig. 6 has shown the structure of uplink voice control frame signal.
Referring to figs. 3 to Fig. 5, description will be according to the up-link power control operation under the normal operating state.
To shown in Figure 5, at base station 200-1, the uplink link radio signal 20 of being launched by mobile radio station 300 is received by receiving element 210-1 as Fig. 3, then, and by decoding unit 300 decodings, so, produced uplink voice frame signal 400 shown in Figure 4.Uplink voice frame signal 400 is made of speech data 410 and speech data signal quality information 420.The uplink voice frame signal 400 that produces at base station 200-1 is launched into base station power control device 100 by industrial siding 10, and is imported into speech frame signal selected cell 110.At speech frame signal selected cell 110, the uplink voice frame signal 400 that sends from a plurality of base stations is checked speech data quality information 420, so that the speech frame signal that selection has highest signal quality.When the signal quality of the uplink voice frame signal of selecting 400 surpassed the reference value that sets in advance in base-station control apparatus 100, speech frame signal selected cell 110 sent uplink voice frame signal 400 to speech coding unit 120.In addition, speech frame signal selected cell 110 turns back to separately base station to the quality results with respect to each frame of the uplink voice frame signal 400 of a plurality of receptions as the frame quality information.
The frame quality information of supplying with from base-station control apparatus 100 is imported into the power control bits generation unit 260-1 that base station 200-1 uses.According to the frame quality information of input, power control bits generation unit 260-1 regulates reference value Eb/No.Equally, the reception Eb/No that equals decoding unit 230-1 output is imported into power control bits generation unit 260-1.Power control bits generation unit 260-1 is receiving Eb/No and comparing with reference to Eb/No, to produce power control bits.The power control bits that produces is inserted in the speech data that is included in the downlink voice frames signal, and then, synthetic speech data sends to mobile radio station 300 as down link signal 21 from transmission unit 220-1.
At mobile radio station 300, by receiving element 310 receiving downlink radio signals 21, then, by decoding unit 330 decodings, so, the downlink voice frames of having regenerated signal 500.The downlink voice frames signal 500 of regeneration is sent to speech frame signal synthesis unit 360.Speech frame signal synthesis unit 360 extracts and is inserted in the power control bits that is included in the speech data 510 in the downlink voice frames signal 500, then, sends the power control bits that extracts and arrives through-put power control unit 350.In this through-put power control unit 350, the uplink transmission power in the transmission unit 320 of mobile radio station 300 is controlled in optimum power value according to the value of the power control bits that sends.
Refer now to Fig. 3, Fig. 5, Fig. 6, description will be according to the downlink transmitted power control operation under the normal operating state.In Fig. 3, Fig. 5, Fig. 6, mobile radio station 300 receives base station 200-1 emitted radio signal 21 by receiving element 310.The radio signal that receives is by decoding unit 330 decodings, and to produce downlink voice frames signal 500 shown in Figure 5, this signal supplies to speech frame signal synthesis unit 360.Downlink voice frames signal 500 by speech data 510 and speech data signal good/bad information 520 constitutes.In speech frame signal synthesis unit 360, storage be included in speech data signal in this speech frame signal 500 good/bad information 520, be used for the preselected time cycle, then, produced through-put power report information 630 shown in Figure 6.Through-put power report information 630 is made of frame number 632, the error frame number 633 of electric field strength 631, measurement.Through-put power report information 630 is synthetic with speech data 610, has produced up link control speech frame signal 600 shown in Figure 6.This up link control speech frame signal 600 sends to base station 200-1 as uplink link radio signal 20 from transmission unit 320.
Base station 200-1 is by receiving element 210-1 receiving uplink radio signal 20.The radio signal 20 that decoding unit 230-1 decoding receives is so that regeneration uplink voice control frame signal 600.By industrial siding 10 the uplink voice control frame signal 600 of regeneration is transferred to base-station control apparatus 100.
The uplink voice control frame signal 600 that is transmitted into base-station control apparatus 100 is split up into speech data 610 and through-put power report information 630 by speech frame signal selected cell 110.Speech data 610 is sent to speech coding unit 120, and through-put power report information 630 is sent to controlled processing unit 130.The frame number 632 of the measurement of controlled processing unit 130 from be included in through-put power report information 630 and error frame number 633 produce with reference to Ec/Io.In this case, be less than or equal at error frame number 633 under the situation of predetermined threshold, controlled processing unit 130 reduces reference value Ec/Io.Equal at error frame number 633 under the situation of predetermined threshold, controlled processing unit 130 keeps reference value Ec/Io.Under the situation of error frame number 633 more than or equal to predetermined threshold, controlled processing unit 130 increases reference value Ec/Io.
After this, base-station control apparatus 100 supplies to the reference value Ec/Io that is included in the electric field strength 631 in the through-put power report information 630 and produce in controlled processing unit 130 by industrial siding 11 the through-put power control unit 250-1 of base station 200-1.Be response reference value Ec/Io and electric field strength 631, through-put power control unit 250-1 controls the downlink transmitted power among the transmission unit 220-1 of base station 200-1 in the mode of the best.The whole through-put power control operation of the mobile communication system under the corresponding normal condition of the operation of explaining above.
The operation of through-put power control system will be described below, according to first embodiment, because the exceptional communication state often takes place the above-mentioned masking phenomenon in Fig. 1.Fig. 7 is a flow chart of explaining the first embodiment through-put power control system work.In this flow chart, the incipient stage, under normal condition, communicate between base station 200-1 and the mobile radio station 300 (step C1).Suddenly turning right when mobile radio station 300 enters the shaded portions of building, and building may interrupt radio channel shown in Figure 1, and mobile communication system enters exceptional communication state (step C2).The frame signal that mobile radio station 300 inspection receives, so that judge whether corresponding instantaneous interrupt status of present state, that is, transient phenomenon, when error frame continuous counter 12 times, mobile radio station 300 determines that this communications status are exceptional communication state (step C3).Determined that the mobile radio station 300 of exceptional communication state generation stops the through-put power (step C4) of transmission unit 320.Simultaneously, base station 200-1 also checks the frame signal of reception, so that judge whether corresponding instantaneous interrupt status of present state, that is, transient phenomenon, when error frame continuous counter 12 times, base station 200-1 determines that this communications status is exceptional communication state (step C5).Determined that the base station 200-1 that the exceptional communication state takes place stops the through-put power control operation (step C6) of transmission unit 220-1, and on the constant level, through-put power has been set.
Aforesaid operations is identical with the conventional through-put power control operation in the IS-95 standard that is defined in TIA/EIA.The characteristics of the through-put power control system of first embodiment are that following processing operation is added in the above-mentioned through-put power control operation.In other words, in the base station, increase downlink transmitted power in fixed intervals subsequently, up to send a response from mobile radio station till, and the base station disconnects the control operation of normal downlink through-put power.In addition, when controlling the power control bits that produces by the base station, increase the uplink transmission power of mobile radio station in fixed intervals by this base station.
Get back to flow chart 7, continue to explain the operation of this through-put power control system.Base-station control apparatus 100 and base station 200-1 require the accepting state (step C7) of mobile radio station 300 reports from the radio wave of base station 200-1 emission, and wait for the response signal (step C8) that mobile radio station 300 sends.Should be noted that the value that the downlink power control bit is provided with can increase the uplink transmission power of mobile radio station one-level (1db).This downlink power control bit is inserted in the receive status report request, this receptions report ask be simultaneously from the base station to the mobile radio station.
Under the state that the response signal that mobile radio station sends is not returned, handle operation and turn back to a kind of like this processing operation.That is, the downlink transmitted power of base station increases 1db (step C9), and then, base-station control apparatus 100 and base station 200-1 require the accepting state of the radio wave of mobile radio station 300 report base station 200-1 emissions again.Then, this is handled to operate and repeats.Should be noted that also the higher limit of selection is a fixing design load when the through-put power of the through-put power of base station and mobile radio station increases, this value is that the through-put power higher limit that the base station by whole system is provided with state, power system capacity, device is determined.
On the other hand, at step C8, the response signal that mobile radio station 300 sends is returned, and can set up such state, and uplink link radio signal and downlink radio signal can be launched under normal condition/receive.As a result, power control operation of up link normal transmission and down link normal transmission power control operation (step C10) have been recovered, so current exceptional communication turns back to proper communication.
Fig. 8 has explained the flow chart of executable operations on the mobile radio station end, in this case, because unusual communications status has taken place in the masking phenomenon that Fig. 1 explains.In Fig. 8, as previously described, a kind of like this operation of the first half of this flow chart operation correspondence, that is, when mobile radio station 300 entered the building that may interrupt radio channel and covers, mobile radio station checked whether this state equals the instantaneous state of transient phenomenon.By using speech frame signal synthesis unit 360, mobile radio station 300 weighted sums are synthesized down link frame signal 500 (steps A 1).Mobile radio station 300 inspection be included in speech frame signal in the downlink voice frames signal 500 good/bad information 520 so that judge whether downlink voice frames signal 500 has been signal (steps A 2).
As the result of this signal check, and when down link speech frame signal 500 has been signal (, do not have error), check to count to be reset that then, the processing operation turns back to synthetic processing of frame and operates (steps A 3).On the contrary, and when down link speech frame signal 500 is bad signal (, error is arranged), check that counting adds 1 (steps A 4).Subsequently, check the count value of counter, when count value less than 12 the time, handle operation and turning back to that frame is synthetic handles operation (steps A 5).On the other hand, when count value more than or equal to 12 the time, stop the through-put power (steps A 6) of mobile radio station 300.
Next step, a kind of like this processing operation of the latter half of correspondence of this flow process, the operation of mobile radio station 300 enters communication from the communication halted state and restarts state.When the through-put power of mobile radio station 300 remains on halted state following time, downlink voice frames signal 500 is by speech frame signal synthesis unit 360 weighted sums synthetic (steps A 7).According to be included in speech frame signal in the downlink voice frames signal 500 good/bad information 520, mobile radio station 300 checks whether downlink voice frames signals 500 have been signal (steps A 8).As the result of this signal check, and when down link speech frame signal 500 is bad signal (, error is arranged), check to count to be reset that then, the processing operation turns back to synthetic processing of frame and operates (steps A 9).On the contrary, and when down link speech frame signal 500 has been signal (, do not have error), check that counting adds 1 (steps A 10).Subsequently, check the count value of counter, when count value less than 2 the time, handle operation and turning back to that frame is synthetic handles operation (steps A 11).On the other hand, when count value more than or equal to 2 the time, restart the through-put power (steps A 12) of mobile radio station 300, so mobile radio station 300 enters communications status.Also should be noted that the value that transmission power value respective base station emitted power control bit produces.
Fig. 9 has described the operational flowchart of base-station control apparatus 100 and base station, in this case, because unusual communications status has taken place in the masking phenomenon that Fig. 1 explains.In Fig. 9, as previously described, a kind of like this operation of the first half of this flow chart operation correspondence, promptly, when mobile radio station 300 entered the building that may interrupt radio channel and covers, base-station control apparatus 100 and base station checked whether this state equals the instantaneous state of transient phenomenon.In base-station control apparatus 100, select to go up shape link speech frame signal 400 (step B1) by speech frame signal selected cell 110.Base-station control apparatus 100 compares (step B2) to the speech data signal quality information 420 that is included in the speech frame signal 400 with the reference value that is provided with in advance.As this result relatively, if speech data signal quality information 420 surpasses reference value, check that counter is reset, then, the processing operation turns back to frame and selects to handle operation (step B3).On the other hand, when speech data signal quality information 420 is less than or equal to reference value, check that counter is added 1 (step B4).Subsequently, check the count value of counter, when count value less than 12 the time, handle operation and turning back to frame and select to handle operation (step B5).On the other hand, when count value more than or equal to 12 the time, stop the through-put power (step B6) of base station 200-1 by base-station control apparatus 100.
Next step, a kind of like this processing operation of the latter half of correspondence of this flow process, the operation of base station 200-1 enters into the through-put power control operation from through-put power control operation halted state and restarts state.Base-station control apparatus 100 requires the accepting state (step B7) of mobile radio station 300 reports from the radio wave of base station 200-1 emission by base station 200-1, and waits for the response signal (step B8) that mobile radio station 300 sends.Should be noted that the value that the downlink power control bit is provided with can increase the uplink transmission power of mobile radio station one-level (1db).This downlink power control bit is inserted in the receive status report request, this receptions report ask be simultaneously from the base station to the mobile radio station.
Under the state that the response signal that mobile radio station 300 sends is not returned, handle operation and turn back to a kind of like this processing operation.That is, the downlink transmitted power of base station increases 1db (step B9) by base-station control apparatus 100, and then, base-station control apparatus 100 requires the accepting state of the radio wave of mobile radio station 300 report base station 200-1 emissions again.Then, this is handled to operate and repeats.
On the other hand, at step B8, the response signal that mobile radio station 300 sends is returned, and can set up such state, and uplink link radio signal and downlink radio signal can be launched under normal condition/receive.As a result, restarted down link normal transmission power control operation (step B10), therefore, mobile communication system is got back to communications status.
As explain in detail the front, according to first embodiment, downlink transmitted power has increased 1db by the base station gradually in fixed intervals, up to send a response from mobile radio station till, when controlling the power control bits that is produced by the base station, this base station increases the uplink transmission power 1db of mobile radio station gradually with fixed intervals.
The through-put power control system of second embodiment of the invention is described below with reference to Figure 10.Figure 10 has shown the block diagram of the internal configurations of base-station control apparatus 100, base station 200-2, mobile radio station 300; In Figure 10, the through-put power control system of second embodiment has such characteristics, that is, traffic measurement unit 270-1 and traffic measurement unit 270-2 are added to base station 200-1 and base station 200-2 respectively.
The traffic measurement unit 270-1 of base station 200-1 checks the telephone traffic state of base station 200-1, then, the base station call value of checking is supplied to through-put power control unit 250-1 and power control bits generation unit 260-1.Be similar to this traffic measurement unit 270-1, the traffic measurement unit 270-2 of base station 200-2 checks the telephone traffic state of base station 200-2, then, the base station call value of checking is supplied to through-put power control unit 250-2 and power control bits generation unit 260-2.
As a tangible example of demonstration base station call amount, adopt the utilization rate of the radio instrument plate that is installed in the base station.Be given the reason of utilization rate what employing is installed in the radio instrument plate of base station below.That is, this numerical relation arrives the calling by this base station, and, under the situation of base station independent measurement telephone traffic, can simply obtain.Because other configuration rather than above-mentioned configuration are identical with the configuration of first embodiment, so, use identical reference symbol at this, omitted identical description.
The operation of the through-put power control system of second embodiment is described below, because exceptional communication often takes place in covering of Fig. 1 explanation.Figure 11 is the flow chart of second embodiment of the invention through-put power control system operation.Because identical by the processing operation of determining from step C1 to C6 shown in Figure 11 with the processing operation of first embodiment of Fig. 7 explanation, so, use identical reference symbol at this, omitted identical description.
To explain the processing operation of this flow process from step C11 now.At step C11, base station 200-1 checks the telephone traffic of the utilization rate of the radio-frequency apparatus that is installed in own base station 200-1 as own base station.Next step, the accepting state of the radio wave of base-station control apparatus 100 and the 300 report base station 200-1 emissions of base station 200-1 request mobile radio station.In this case, be the utilization rate of response radio-frequency apparatus, base station 200-1 is provided with such value for the downlink power control bit, that is, increase in the scope of the downlink transmitted power of base station between 0.5db and 2db (step C12).Base-station control apparatus 100 and base station 200-1 wait for the response signal (step C13) of mobile radio station 300 emissions.If response signal is not returned from mobile radio station 300, be the utilization rate of response radio-frequency apparatus, the downlink transmitted power of base station increases (step C14) at 0.5db in the scope of 2db.Then, handle operation and turn back to a kind of like this processing operation, that is, base-station control apparatus 100 and base station 200-1 ask the accepting state of the radio wave of mobile radio station 300 report base station 200-1 emissions again, and then, this is handled operation and repeats.
This is that this is the correct through-put power control operation of needs because when high and telephone traffic is big, do not provide remaining interference volume for another mobile radio station when the utilization rate of the radio-frequency apparatus of base station.As a result, be provided with the increase rank of little rank 0.5db.If the utilization rate of the radio-frequency apparatus of base station is low, telephone traffic hour exists for another mobile radio station to provide remaining interference volume, even when through-put power becomes more or less high, has a minor issue, and gathering way of through-put power may constitute principal element.As a result, be provided with the increase rank of 2db.
On the contrary, at step C13, the response signal of mobile radio station 300 emissions is returned, last shape link radio signals and downlink radio signal can be in emission/receptions under the normal condition, equally, recovered last shape link/down link normal transmission power control operation, so exceptional communication turns back to proper communication.
Figure 12 describes the radio-frequency apparatus utilization rate and the flow chart that the relation between the class value is set of the through-put power control of step C12 and C14 in Figure 11.In Figure 12, if the utilization rate of the radio-frequency apparatus of base station is less than or equal to 25% (step D1), then through-put power control hierarchy value is set to 2db (step D2).This through-put power control hierarchy value is to be provided with for the through-put power control unit of base station and power control bits generation unit.Equally, if the utilization rate of radio-frequency apparatus more than or equal to 75% (step D3), the through-put power control hierarchy value of selection is 0.5db (step D4).Equally, if the utilization rate of the radio-frequency apparatus of base station surpasses 25% less than 75%, then the through-put power control hierarchy value of Xuan Zeing is 1db (step D5).This through-put power control hierarchy value is to be provided with for the through-put power control unit of base station and power control bits generation unit.The above-mentioned description list that is provided with is understood the discrete utilization rate of radio-frequency apparatus and the discrete relation that is provided with between the class value of through-put power control.
As mentioned above, according to the through-put power control system of second embodiment, be the telephone traffic of response base station, downlink transmitted power is between 0.5db and the 2db in the scope that fixed intervals increase.In addition, when having controlled the power control bits of base station generation, be the telephone traffic of response base station, the uplink transmission power of mobile radio station is between 0.5db and the 2db in the scope that fixed intervals increase.
Foregoing description is very clearly, according to through-put power control system of the present invention, if be moved to the place (masking phenomenon) that the recurrent radio wave that is caused by building interrupts in normal condition with the mobile radio station of base station communication, interrupted radio wave along uplink direction and down link direction, then the base station little by little increases downlink transmitted power 1db in fixed intervals, send response signal up to mobile radio station, disconnect the control operation of normal downlink through-put power simultaneously.In addition, the power control bits that base stations control produces in the base station is so that increase the uplink transmission power 1db of mobile radio station in fixed intervals.As a result, can recover the communication of setting up between base station and the mobile radio station.
In addition, according to through-put power control system of the present invention, if be moved to the place (masking phenomenon) that the recurrent radio wave that is caused by building interrupts in normal condition with the mobile radio station of base station communication, interrupted radio wave along uplink direction and down link direction, be the telephone traffic of response base station, the base station increases between downlink transmitted power 0.5db and the 2db in fixed intervals.Send response signal up to mobile radio station, disconnect the control operation of normal downlink through-put power simultaneously.In addition, be the telephone traffic of response base station, the power control bits that base stations control produces in the base station is so that increase in fixed intervals between the uplink transmission power 0.5db and 2db of mobile radio station.As a result, the communication of setting up between fast quick-recovery base station and the mobile radio station has suppressed the interference to other mobile radio station.
Claims (5)
1. CDMA (code division multiple access) mobile communication system that constitutes by mobile radio station, a plurality of base station and base-station control apparatus, described mobile communication system comprises:
When the base station sends to mobile radio station to the report request of accepting state, if be moved to the place that the recurrent radio wave that is caused by building interrupts in normal condition with the mobile radio station of base station communication, and interruption radio channel, be used in fixed intervals, increasing the device of the downlink transmitted power of base station, up to send a response from mobile radio station;
When the power controlling control bit makes up with the report request, be used in fixed intervals, increasing the device of the uplink transmission power of mobile radio station.
2. by the described through-put power control system of claim 1, it is characterized in that each added value that the uplink transmission power of the downlink transmitted power of base station in fixed intervals and mobile radio station is selected is 1db.
3. by the described through-put power control system of claim 1, it is characterized in that described base station also comprises:
The traffic measurement device;
Be the telephone traffic that the response traffic measurement is partly measured, the added value separately of the uplink transmission power of the downlink transmitted power of base station and mobile radio station is arranged on 0.5db in the scope between the 2db in described fixed intervals.
4. by the described through-put power control system of claim 1, it is characterized in that being the utilization rate of response radio-frequency apparatus, the added value separately of the uplink transmission power of the downlink transmitted power of base station and mobile radio station is arranged on 0.5db in the scope between the 2db in fixed intervals.
5. by the described through-put power control system of claim 4, it is characterized in that added value is set to 2db when the utilization rate of the radio-frequency apparatus of base station is less than or equal to 25%;
When the utilization rate of the radio-frequency apparatus of base station more than or equal to 75% the time, added value is set to 0.5db; And
When the utilization rate of the radio-frequency apparatus of base station surpasses 25% less than 75% the time, added value can be set to 1db.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36285199A JP3398700B2 (en) | 1999-12-21 | 1999-12-21 | Transmission power control method in mobile communication system |
| JP362851/1999 | 1999-12-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1301092A true CN1301092A (en) | 2001-06-27 |
| CN1312855C CN1312855C (en) | 2007-04-25 |
Family
ID=18477896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001357948A Expired - Fee Related CN1312855C (en) | 1999-12-21 | 2000-12-21 | Emission power controlling system for mobile communication system |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6917599B2 (en) |
| EP (1) | EP1111810B1 (en) |
| JP (1) | JP3398700B2 (en) |
| KR (1) | KR100391733B1 (en) |
| CN (1) | CN1312855C (en) |
| BR (1) | BR0006538A (en) |
| DE (1) | DE60040381D1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1885733B (en) * | 2005-06-23 | 2010-05-05 | 上海华为技术有限公司 | Power controlling method for dedicated channel |
| CN106576300A (en) * | 2014-07-31 | 2017-04-19 | 高通股份有限公司 | Power control performance for user equipment |
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| KR100749900B1 (en) * | 2001-07-24 | 2007-08-21 | 가부시키가이샤 엔티티 도코모 | Transmission power control apparatus and method in a mobile communication system, mobile station, and communication apparatus |
| KR100915275B1 (en) | 2001-11-05 | 2009-09-03 | 가부시키가이샤 히타치세이사쿠쇼 | Wireless communication system and communication control method therefor and wireless communication station |
| US6754254B2 (en) * | 2001-11-09 | 2004-06-22 | Qualcomm Incorporated | Control of transit power during out-of-lock condition |
| TWI333756B (en) * | 2002-11-15 | 2010-11-21 | Interdigital Tech Corp | Wireless transmit/receive units having multiple receivers and methods |
| AU2003284444A1 (en) * | 2002-11-26 | 2004-06-18 | Matsushita Electric Industrial Co., Ltd. | Communication method, transmitter apparatus and receiver apparatus |
| JP2004266585A (en) | 2003-03-03 | 2004-09-24 | Hitachi Ltd | Wireless communication system, its transmission electric power and data rate control method |
| US7760679B2 (en) * | 2003-05-13 | 2010-07-20 | Koninklijke Philips Electronics N.V. | Radio communication system |
| KR100969732B1 (en) * | 2003-12-24 | 2010-07-13 | 엘지노텔 주식회사 | Method of power control when uplink is in a state of out of sync in mobile communication system |
| WO2005083909A1 (en) * | 2004-03-01 | 2005-09-09 | Nec Corporation | Wireless base station unit and transmission power control method |
| US8488459B2 (en) * | 2005-03-04 | 2013-07-16 | Qualcomm Incorporated | Power control and quality of service (QoS) implementation in a communication system |
| ATE393551T1 (en) * | 2006-01-06 | 2008-05-15 | Cheng-Hao Chien | METHOD AND DEVICE FOR IDENTIFYING SHADOWING APPEARANCES IN WIRELESS COMMUNICATIONS |
| EP2011249B1 (en) * | 2006-04-27 | 2015-12-02 | Telefonaktiebolaget L M Ericsson (publ) | Method and system of communication |
| US20080056206A1 (en) * | 2006-08-31 | 2008-03-06 | Motorola, Inc. | Power savings method and apparatus in a communication system |
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| KR100965083B1 (en) * | 2008-06-03 | 2010-06-23 | 주식회사 케이티 | Apparatus and method for down-link power control for preventing up-link failure in mobile telecommunication system |
| US8917636B2 (en) * | 2011-06-30 | 2014-12-23 | Intel Mobile Communications GmbH | Transmitter circuit and method |
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| EP3997957A1 (en) * | 2019-07-08 | 2022-05-18 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Radio resource management to enhance reliability in mobility scenarios |
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1999
- 1999-12-21 JP JP36285199A patent/JP3398700B2/en not_active Expired - Fee Related
-
2000
- 2000-12-20 EP EP20000127991 patent/EP1111810B1/en not_active Expired - Lifetime
- 2000-12-20 KR KR10-2000-0078945A patent/KR100391733B1/en not_active IP Right Cessation
- 2000-12-20 DE DE60040381T patent/DE60040381D1/en not_active Expired - Lifetime
- 2000-12-20 US US09/739,827 patent/US6917599B2/en not_active Expired - Fee Related
- 2000-12-21 CN CNB001357948A patent/CN1312855C/en not_active Expired - Fee Related
- 2000-12-21 BR BR0006538A patent/BR0006538A/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1885733B (en) * | 2005-06-23 | 2010-05-05 | 上海华为技术有限公司 | Power controlling method for dedicated channel |
| CN106576300A (en) * | 2014-07-31 | 2017-04-19 | 高通股份有限公司 | Power control performance for user equipment |
| CN106576300B (en) * | 2014-07-31 | 2018-09-28 | 高通股份有限公司 | The Poewr control method and device of user equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001177471A (en) | 2001-06-29 |
| US6917599B2 (en) | 2005-07-12 |
| US20010004374A1 (en) | 2001-06-21 |
| CN1312855C (en) | 2007-04-25 |
| EP1111810B1 (en) | 2008-10-01 |
| EP1111810A2 (en) | 2001-06-27 |
| DE60040381D1 (en) | 2008-11-13 |
| KR20010067471A (en) | 2001-07-12 |
| EP1111810A3 (en) | 2003-06-18 |
| BR0006538A (en) | 2001-07-24 |
| KR100391733B1 (en) | 2003-07-16 |
| JP3398700B2 (en) | 2003-04-21 |
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